Lubricant-retaining device for the valve mechanism of internal-combustion engines.



F. H. ROYCE.

LUBRICANT RETAINING DEVICE FOR THE VALVE MECHANISM OF INTERNALCOMBUSTION ENGINES APPLICATION FILED SEPT. I9. I9I6.

Patented May 8, 1917 m mmo earner FREDERICK HENRY ROYCE, OF DERBY,ENGLAND, ASSIGNOR T0 ROLLS-RCiYGE LIMITED, 0F DERBY, ENGLAND.

LUBRICANT-Rf TAINING- DEVICE FOR THE VALVE MECHANISM OF INTERNALGOMBUSTION ENGINES.

specification of Letters Patent.

Patented May 8, iltli''t Application filed September 19, 1916. SerialNo. 121,071.

To (:ZZ whom it may concern:

Be it known that I, FREDERICK HENRY Boron, a subject of the King ofEngland, residing at Derby, in England, have invented certain new anduseful Improvements in Lubricanolletaining Devices for the ValveMechanism, of Internal-Combustion Engines, of which the follo'wing is aspecification,

This invention relates to an improved means for retaining thelubricating oil in casings containing moving parts which projecttherethrough and require lubrication, more especially the camshaftcasing of internal combustion engines fitted With overhead valves, andthrough the sides of which casings oscillating levers or rockersproject, and it has for its object the prevention of oil leakage at thepoints Where the said levers pass through the casing.

This end is attained by forming a baffle plate around the projectingelement at the 1 point Where it passes through the side of the casing,the shape ofasaid hallie plate being such that it forms a pocket Whichtraps any oil tending to creep along the element and enables it to beled back into the casing by means of a suitably shaped and positionedconduit.

In the accompanying drawings, which illustrate by way of example theinvention applied .to the camshift casing of an internal combustionengine fitted with overhead valves, Figure 1 is an elevation, partly insection, and Fig. 2 a. plan, partly in section (looking-in direction ofarrow m).

In said drawings 0 designates the lubricant container or casing in whichis mounted the cam-shaft c from which the rocking tappet levers aactuating the valve spindles a are actuated.

The rocking lever a mounted in the casing c is fitted with a plate 6which may be formed out of the material of said rocker or made aseparate part and secured to the rocker in any suitable manner, saidplate being shaped so that it forms a pocket or battle which catches anyoil creeping along the lever. ()ver.the opening in the casing throughwhich a lover a passes is formed a chamber or channel 03 into which theoil from the pocket passes and is conveyed back into the casing 0through a suitable hole a in the casing Wall.

What I claim as my invention and desim to secure by Letters Patent ofthe United States is 1. In an internal combustion engine having overheadvalves the combination of a cam shaft casing adapted to containlubricant, a cam shaft therein, levers operated. by said cam shaftadapted to. actuate the valves and extending through said casing, and

plates on said levers forming bellies acapted to prevent lubricanttending to creep along said valve levers from passing to the exteriorofsaid casing.

2. In an internal combustion engine the combination with a cam-shaftcasing adapted to contain lubricant and having an aper- 'ture in itsWall, a valve operating lever pro-- jeeting through said aperture, abaflle in connection with said lever adjacent said aperture and adaptedto'arrest lubricant passing therethrough, a second aperture in thecasing Wall and a, conduit exterior to-the casing and in communicationwith said second aperture and the baffle plate for con-- ductinglubricant from the latter back to the interior of the casing.

In Witness whereof I have signed this specification in the ri'esence oftwo Wit nesses.

FREDERICK HENRY ROYCE.

Witnesses:

ALBERT GEORGE ELmo'rr, Nome: Manna WOLVERSON.

